//
//  MainTabBar.swift
//  weibo
//
//  Created by HJ on 16/3/8.
//  Copyright © 2016年 HJ. All rights reserved.
//

import UIKit

class MainTabBar: UITabBar {
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        addSubview(plusBtn)

    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    
    
    
    private lazy var plusBtn: UIButton = {
        let btn = UIButton();
        btn.setBackgroundImage(UIImage(named: "tabbar_compose_button"), forState: .Normal)
        btn.setBackgroundImage(UIImage(named: "tabbar_compose_button_highlighted"), forState: .Highlighted)
        btn.setImage(UIImage(named: "tabbar_compose_icon_add"), forState: .Normal)
        btn.setImage(UIImage(named: "tabbar_compose_icon_add_highlighted"), forState: .Highlighted)
        btn.sizeToFit()
        return btn
    }()
    
    override func layoutSubviews() {
        super.layoutSubviews()
        let w = self.bounds.width / 5
        let h = self.bounds.height
        
        var index: CGFloat = 0;
        for subview in subviews {
            if subview.isKindOfClass(NSClassFromString("UITabBarButton")!) {
                let x = index * w
                let rect = CGRect(x: x, y: 0, width: w, height: h)
                subview.frame = rect
                index++
                if index == 2 {
                    index++
                }
                
            }
            
        }
        plusBtn.frame = CGRect(x: w * 2, y: 0, width: w, height: h)
    }
    

}
